pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-5178-ArthursSeat.ps) >>/Users/jc/w/tmp/Tune-5178-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/abc/Scotland/reel/ArthursSeat.abc

Error exit status 256; here are some files to check:
[get.cgi V=1/1 B=0 scale=0.65 512x512 PNG]
filesizedescription
Coll_51781.log 1197580 Log file, useful mostly for debugging
Coll_51789.log 1054270 Log file, useful mostly for debugging
Tune-5178-ArthursSeat.abc 534 ABC music file with the extracted tune(s)
Tune-5178-ArthursSeat.ps 36197 PostScript
Tune-5178-ArthursSeat.txt 534 Plain-text file with the extracted tune(s)
Tune-5178-get.log 4427 Log file, useful mostly for debugging
These files should be available for 24 hours.